scottc
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| posted on 26/2/07 at 05:28 PM |
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Aldi Thurs specials
Air compressor for £60 - my calculations say 270 Litres per min is
about 9 CFM. Can that be right??
and some cheap tools as well
http://www.aldi-stores.co.uk/special_buys/index.html
Scott.
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nib1980
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| posted on 26/2/07 at 06:13 PM |
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on a serious note will this do the job for spraying? if so I'll be of there tonight
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Peteff
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| posted on 26/2/07 at 06:15 PM |
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130lt/min is 4.5cfm so I get about 9cfm
That's the free air delivery so it might be a bit optimistic. I have a V twin 3hp that doesn't claim that much but at the price that is
still very good. I'm going to get the rattle gun with sockets.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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Guinness
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| posted on 26/2/07 at 06:16 PM |
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Nib1980
Sh*te is it Thursday already
Where has the week gone?
Mike
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Peteff
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| posted on 26/2/07 at 06:42 PM |
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Don't go till Thursday.
Get a gravity feed gun and you'll be fine for painting. I used to use a little constant feed one for doing panels blow ins and it was nowhere
near as strong as that one. The gun I use now was £10 off ebay and it's great for stuff like nosecone and wings. I wish I'd bought 2 or 3
of them for spares now but I haven't seen them since at that price.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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britishtrident
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| posted on 26/2/07 at 07:16 PM |
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They are quoting displacement not Free Air delivery ---- FAD is always a lot less. the relationship between the two depends on the volumetric
efficiency of the compressor.
[Edited on 26/2/07 by britishtrident]
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flak monkey
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| posted on 26/2/07 at 07:17 PM |
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270l/m is 9.4cfm
As others have said its the FAD that you need to know.
David
Sera
http://www.motosera.com
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Danozeman
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| posted on 26/2/07 at 07:42 PM |
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My mate at work go one last year. Its very good and will power the air gun well.
Ideal for spraying. Its better than mine and mines good for it.
Dan
Built the purple peril!! Let the modifications begin!!
http://www.eastangliankitcars.co.uk
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Bluemoon
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| posted on 26/2/07 at 07:46 PM |
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I have one from last time the offer came around much better than some other offerings.
last time thay flew out of the door as quickly as they could get them off the pallet...
It's about the bigest compresor you can get for a single cylinder, but... You can connect two up together as the second outlet is before the
regulator...
Dan
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Confused but excited.
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| posted on 26/2/07 at 08:38 PM |
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They are not a bad piece of kit. Unfortunately I bought mine just before Aldi sold the first ones last year, so paid £120 for mine. talk about pig
sick.
I am going to install a big receiver behind the garage and connect it to that. Switch on, go for a cup of coffee until tank pressurises, job's a
good 'un!
Tell them about the bent treacle edges!
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scottc
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| posted on 26/2/07 at 09:31 PM |
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so if I get two will it be 18 CFM and 50 litre capacity or less than that?
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Confused but excited.
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| posted on 26/2/07 at 11:38 PM |
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It may be 18 CFM but at atmospheric pressure, not at the 90psig you want for air tools. At 90 psig it will be just under 3CFM hence my desire for a
big receiver. Otherwise, you use it faster than the compressor can supply it. 
Tell them about the bent treacle edges!
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Peteff
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| posted on 27/2/07 at 12:30 AM |
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Otherwise, you use it faster than the compressor can supply it.
That's where the free air delivery figure comes in. As a rule of thumb it is roughly 2/3 the cfm but doubling up on the pumps doesn't
automatically double the cfm figure. Having bigger receiver will not improve the rate it recovers, it will take longer to fill it back up to the
operating pressure you need if you are beating the supply. If I use a gun at 40psi my compressor will refill the tank faster than the gun can empty it
but if I use 90psi it will run continuously and pressure will drop lower than needed till I stop and let it catch up.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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britishtrident
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| posted on 28/2/07 at 09:08 PM |
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quote:
Originally posted by Confused but excited.
It may be 18 CFM but at atmospheric pressure, not at the 90psig you want for air tools. At 90 psig it will be just under 3CFM hence my desire for a
big receiver. Otherwise, you use it faster than the compressor can supply it.
Don't confuse the swept volume with free air delivery. The cylinder filling and delivery is restriced by the valves just like on a car but more
so. When air is At delivered higher pressue it get worse because the clearance volume becomes a factor.
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